<?php
/**
 * Created by PhpStorm
 * USER MingTingLiang   QQ 915802070
 * Date 2020-12-15-015   14:16
 */


interface  INews
{
    public function regPlug(IPlugin $plugin);    //注册插件,好比买票

    public function unregPlug(IPlugin $plugin);  //反注册插件,好比退票

    public function display();  //通知
}